Formation and properties of ZnO nano-particles from gas phase synthesis processes |
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| Authors: | H Kleinwechter C Janzen J Knipping H Wiggers P Roth |
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| Affiliation: | (1) Institut für Verbrennung und Gasdynamik, Gerhard-Mercator-Universität Duisburg, 47048 Duisburg, Germany |
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| Abstract: | ZnO nano-particles have been synthesized in low pressure flow reactors utilizing Zn(CH3)2 as precursor. Two different synthesis routes have been employed. A low pressure flame reactor and a microwave reactor were used for synthesis of ZnO particle in Zn(CH3)2 doped H2/O2/Ar flames and Zn(CH3)2 doped Ar/O2 plasmas, respectively. The particle formation process has been investigated in situ by a particle mass spectrometer. Also, sampled powders have been investigated ex situ by means of FT-IR, XRD, TEM, and UV-VIS. For both synthesis routes nanometer sized ZnO particles were found with particle diameters in the range between 4 to 8 nm. In cases of the flame reactor the results suggest a strong influence of water on the particle formation process. |
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